Wrecking tool



WRECKING TOOL 2 Shees sheet l Y File-d Oct:

4July 15, 1924.

, J, E. HOFFMAN WRECKING TOOL Filed 0st, 2o. 1925y 2 sheets-sheer 2 Patented July 15, 1924.

JOI-IN E. HOFFMAN. OF CASPER, WYOMING.

WR-ECKING TOOL.

Application iled October 20. 1923. Serial No. 669,767.

To all whom t may concern.'

Be it known that I. JOHN ll. HOFFMAN, a citizen of the United States, residing at Casper,y in the county of Natrona and State of lVyoming, have invented certain ne f' and useful Improvements in lllrecking rfools; and I do hereby declare the following` to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same. i

The object of the present invention is the provision of a tool whereby scaffolding and frame structures generally may be taken apart without injury to boards and like material, so that the same may be advantageously reused.

In accordance with the present invention, the tool comprises a pry7 such as a lever, an anchoring member having the pry pivoted thereto and adapted to engage a steady member such as a post. beam or studl` and a shoe for distributing the pressure of the pry upon the board or like part to be detached.

Other objects and advantages will be apparent and suggest themselves as the nature of the invention is-understood.

lVhile the drawings illustrate an embodiment of the invention it is to be understood that in adapting the same to meet diii'erent conditions and requirements7 various change in the form, proportion and minor details of construction may be resorted to without departing from the spirit of the invention.

Referring to the accompanying drawings forming a part of the application:

Figure 1 is a perspective view of one form of the invention showing the same as it appears when in ope-ration,

Figure 2 is detail sec-tional view of the parts illustrated in Figure l,

Figure 3 is a front view of the shoe, the anchoring member and the sliding' connection to which the shoe is pivoted,

Figure 4 is a view similar to Figure l of a modification,

F igtn'e 5 is a view similar to Figure 2 of the modified form7 and Figure 6 is a view similar to Figure 3 of the corresponding parts of the modification.

Corresponding and like parts are referred to in the followingdescription and designated in the several views of the drawings by like reference characters.

The numeral l designates post, stud or the like to which a board 2 is attached, these parts being shown to demonstrate the application of the invention.

The numeral 3 designates a may consist of a bar of any preferred form having a cam il at its active end, said cam preferably forming a part of the pry. An opening 5 separates an intermediate portion of the cam 4 from the body 3 of the pry and besides lightening the structurev provides for the reception of a pin G' or like connection whereby the shoe 7 is connected to the pry to prevent displacement of the parts.

The anchoring member 8 is provided at its forward end with a short Crossbar 9, either end of which is adapted to engage a post l or like part according to the arrangement of the tool upon one side or the other of the partl. rlhe member 8 is elongated and receives a slide l0 t'o which the shoe 7 is pivotally connected at ll. A helical spring l2 connects the slide 1 0 with the member S and normally holds the slide within the member. The member 8 is hollow and encloses the slide l0 and spring l2 which are retained in place within the opening 13 formedin the said member; The pry 3 is pivoted to the member 8 adjacent the crosshead 9, as indicated at 14.

The shoe 'T consists of an elongated plate of a size to elieotively distribute the pressure of the pry upon the element 2 and its upper end is reduced and extends through the bottom of the n'iember 8 and is pivoted to the slide l0. as indicated at ll. Spaced ears l5 projecting from the plate 7 embrace opposite sides of the cam -l and their outer ends are connected by means of the pin 6. In the modification shown in Figure 4l and the detail views thereof, the pry 3 is substantially the same as herein before described and is pivoted at lelto the shoe 8L which is bifurcated at its rear end, the bifurcations Sb being curved and embracing opposite sides of the pry 3 whereby to assist materiallyv in maintaining the parte in alinement. The forward end yof .the anchoring member Sa is provided with a crosshead 9. The shoe T is substantially the saine in construction and operation as the corresponding part herein before described and is connected at its upper end to the anchoring member 8a by means of a helical spring lo. The spring 1S performs the same function as the slide l0 and spring l2 of pry which the form shown in Figure l and the detail view thereof' and constitutes a yieldable connection between the shoe and anchoring member, whereb7 said parts may nove and adapt themselves to the changed relation brought about incident to the operation of the pry 3.

In the operation of the tool, the same is disposed so that an end of the crosshead 9 engages the part l and the shoe 7 the part Q and upon operating the priv 3, the cam 4 thereof exerts a pressure on the shoe T and by reason or' thefpivotal connection ot the pry with .the anchoring member, the latter and the shoe are moved in opposite directions and as a result the board Q is de tached kfrom the post l or like partl and by reason ofthe shoe distributing the pressure, the board is detached 'without appreciable injury thereto which would preclude its further eiii'ective use.

f What is claimed isz l. A wreckingtool of the character specified, comprising` an anchoring member, a pry'pivoted at one end to the anchoringl member and havingl a cam at one side spaced therefrom intermediate its ends, a shoe having spaced ears embr ingv opposite sides ot said cam,` a-pin connecting the free ends oi said ears and adapted tri-'engage the inner edge of the cam, and a yieldable connection. 'between the shoe vand anchoringl member, said anchoring member having ears extended t0 provide portions embracing opposite sides of the prj,r adjacent the pivotai connection of the pry therewith.

2.k A Wrecking tool of the character specified, comprising an anchoring member, a pry pivoted at one end to the 'anchoring member and having` a cam at one side spaced therefrom intermediate its ends, a shoe having spaced ears'embracing opposite sides of said cam, a pin connecting the free ends of said ears and adapted to engage the inner edge of the cam, and a yieldable connection between the shoe and anchoring member, said. yieldableconnection comprising slide mounted upon theA anchoring member and having' the shoe pivotedthereto, and a spring between the slide and-an- Chor-ingmember.

3. A wrecking tool ot thecharacter specified, comprising an anchoring-` -membenl' a pry pivoted at one Lend to 'thefanchoiing member' and having a cam atonc-side-space f therefrom intermediate: its-ends, a shoehaving spaced-ears embracing opposite sides jof said cam, a pin connecting lthe -free-en1ds of said ears and adapted toA engage the inner edge of the c'aimand a vieldable'com" nection' between the shoe f vand-f'anchoring member, said yieldable-connection comprising,` a slide and spring housedfwithin: the anelioring member, saidslide: having the shoe pivoted` thereto and the'ispring con-"- iii-:voting` the slide withlthe y.anchoring*member.

In testimony whereof` I afllixemy signature in presence of two' witnesses.

JOHN E. HOFFMAN. VTitnesses CLARA ADKiNs, Lors LoNGsHonn, 

